4-3 Air Defense Artillery Regiment

The 4th Battalion, 3rd Air Defense Artillery Regiment was constituted on May 8, 1794, in the Regular Army as the 3d Company, 4th Battalion, Corps ofArtillerists and Engineers. The unit was first designated Captain Robert Sweeney's Company of Artillery in 1802 and served actively in the War of 1812.

The Battalion’s distinctive lineage spanned two centuries and almost every major conflict throughout the world in defense of the homeland in Field, Costal and Anti-aircraft Units. During World War II, the 3rd Regiment was broken up into battalions, and the unit was designated briefly as the 520th Coast Artillery Battalion, then as the 3rd Coast Artillery Battalion.

The unit was inactivated following the end of the war.In January 1950, the Battalion was reconstituted in the regular Army and consolidated with the 3rd Antiaircraft Artillery Battalion (Automatic Weapons), an element of the 3rd Infantry Division. It fought throughout the Korean War with the 3rd Infantry Division. In September 2005 the unit was again inactivated. Once again, on July 27, 2010, the 4th Battalion, 3rd Air Defense Artillery Regiment was officially activated at Fort Sill to support the 31st Air Defense Artillery Brigade.

The Mural, Crown, Cactus and Palm represent the Mexican War and the Philippine Insurrection. The Sun is for Laurels Earned by the Regiment.

The Motto "Non Cedo Ferio" means "I Yield Not, I Strike"